The Valence Shell of the Element X Contains 2 Electrons

question 122

Multiple Choice

The valence shell of the element X contains 2 electrons in a 5s subshell.Below that shell,element X has a partially filled 4d subshell.What type of element is X?

• A)main group element
• B)chalcogen
• C)halogen
• D)transition metal
• E)alkali metal

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